[Gta04-owner] GPS fix?

[Dr. H. Nikolaus Schaller]

Am 15.11.2011 um 14:16 schrieb Christoph Mair:

> On Tue, Nov 15, 2011 at 2:06 PM, Boudewijn <wankelwankel at yahoo.com> wrote:
> 
>>>>> On Mon, Nov 14, 2011 at 11:21 PM, Neil Jerram
>>>>>> Has anyone got a GPS fix yet, or any real GPS information, with
>>>>>> their GTA04?
>>>>>>  I don't seem to get one with mine.
> 
>> I'll try if I get a fix with mine and post back.
> 
> Please also test with an external antenna if you have one. Place it as
> far away from the device as possible and if you get a fix retry with
> antenna and gta04 placed right next to each other.
> 
> @Nikolaus: since I can't remember: do we have testpoints or something
> similar to capture TX/RX from/to the GPS module?

No test points.

But the module starts sending NMEA records (with 0 satellites and void
location data) on /dev/ttyS1 as soon as you give one  impulse on the on/off line.

Please compare (slightly updated):

	http://projects.goldelico.com/p/gta04-kernel/page/GPS/

This has been tested by the GTA04-Tester for all units we have shipped so far.
So it is safe to assume that the RX/TX interface is working if there is a "ok" record
in the test protocol.

What test did not check is if the internal antenna switch and power supply is working
well enough and does not have too much attenuation for good reception.

A common problem of the internal GPS antenna module is that the cable may
break at the end that is soldered to the module during some disassembly of
the units.

BR,
Nikolaus